吴皓威^{1, 3,,},
舒畅²,
欧静兰²,
杨士中¹
1.重庆大学通信与测控中心 重庆 400044
2.重庆大学微电子与通信工程学院 重庆 400044
3.空天地网络互连与信息融合重庆市重点实验室 重庆 400044
基金项目:重庆市科技创新专项院士基金(cstc2018zdcy-yszxX0001, cstc2017zdcy-yszx0009)，民用航天十三五预研项目(D010201)

详细信息

作者简介:吴皓威：男，1981年生，副研究员，研究方向为宽带无线通信、阵列信号处理等
舒畅：男，1996年生，硕士生，研究方向为阵列信号处理、微波输能等
欧静兰：女，1981年生，副教授，研究方向为宽带无线通信、中继通信等
杨士中：男，1937年生，教授，中国工程院院士，研究方向为飞行器测控、遥感传输等

通讯作者:吴皓威　wuhaowei@cqu.edu.cn

中图分类号:TN911.7

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被引次数:0

出版历程

收稿日期:2019-10-09
修回日期:2021-05-24
网络出版日期:2021-06-16
刊出日期:2021-08-10

A Three-dimensional Source Location Algorithm Based on Sparse Planar Array with Low Complexity

Haowei WU^{1, 3,,},
Chang SHU²,
Jinglan OU²,
Shizhong YANG¹
1. Center of Communication and Tracking Telemetry Command, Chongqing University, Chongqing 400044, China
2. School of Microelectronics and Communications Engineering, Chongqing University, Chongqing 400044, China
3. Chongqing Key Laboratory of Space Information Network and Intelligent Information Fusion, Chongqing 400044, China
Funds:The Academician Fund of Chongqing Science and Technology Innovation Guidance Project (cstc2018zdcy-yszxX0001, cstc2017zdcy-yszx0009), The Advanced Research Project of Civil Aerospace Technologies in 13th Five-year Plan (D010201)


摘要
摘要:针对3维信源定位中阵列结构过于复杂、算法复杂度过高、谱峰搜索范围过大的问题，该文提出一种基于互素线阵互素平移的稀疏面阵(CLACS-SPA)的3维降秩MUSIC算法(RARE-MUSIC)。所提CLACS-SPA拥有中心对称的互素稀疏面阵结构，相较于同口径均匀面阵结构减少了大量的阵元，降低了阵列的结构复杂度；以CLACS-SPA为基础的3维RARE-MUSIC算法利用泰勒公式将接收信号中的方向信息与距离信息进行分离估计，从而将3维谱峰搜索转化为方位角俯仰角的2维搜索和距离项的1维搜索，降低了定位算法的计算复杂度。仿真分析表明：在口径与定位算法相同条件下，与均匀面阵结构相比，所提结构的计算复杂度降低了1～2个数量级；在相同口径与CLACS-SPA结构下，与经典3维MUSIC算法相比，所提算法的复杂度降低了2～3个数量级；在相同口径和阵元数量条件下，与经典3维MUSIC算法相比，所提算法不仅降低了计算复杂度，而且提升了方位角与俯仰角的测量精度。
关键词:3维信源定位/
稀疏面阵/
降秩MUSIC算法/
低复杂度
Abstract:A RAnk REduced MUSIC (RARE-MUSIC) algorithm based on Coprime Linear Array Coprime Shift Spare Planar Array (CLACS-SPA) is proposed, in order to solve the problems in the three-dimension source location, such as too complex array structure, too high-complexity algorithm and large partial spectrum range. The proposed CLACS-SPA has a centrosymmetric coprime sparse array structure, which reduces the number of antennas and structural complexity of the array, compared with the uniform planar array structure of the same caliber. The direction and distance information in the received signal are separated and estimated by Taylor formula, thus the three-dimensional spectral peak search is transformed into the two-dimensional search of the azimuth angle as well as elevation angle and the one-dimensional search of the distance, which reduces the computational complexity of the positioning algorithm. Simulation results show that the complexity of the proposed structure is one to two orders of magnitude lower than that of the uniform planar array structure, under the same aperture and location algorithm. In addition, for the same caliber of the proposed CLACS-SPA structure, the proposed RARE-MUSIC algorithm is less complex than the classical three-dimension MUSIC with two to three orders of magnitude. And under the same aperture and number of antennas, the proposed RARE-MUSIC greatly reduces the computational complexity and improves the measurement accuracy of azimuth and elevation angles, in comparison with the classical three-dimension MUSIC algorithm.
Key words:Three-dimensional source location/
Sparse planar array/
RAnk REduced MUSIC(RARE-MUSIC)/
Low complexity



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